If you have a password, remove it. (What can he crack if there is nothing to crack...)

This is the dumbest thing I have ever heard of. One of the easiest passwords to crack is if the user left the password blank. Windows will remotely give you the usernames ( assuming no firewall ) if that is the only obstacle they have to overcome you have lost the battle and the war, your machine will become known as zombie70414.

Get an os that is less likely to be hacked. Stay off of IRC cespools and porn sites. don't open any email you were not expecting. close or turn off all services that are not needed. Use extremely strong passwords made up of three or more words, numbers, sysbls and capitals.
Mary had a little lamb whose fleece was white as snow becomes MH11&hfwwa$
Change passwords at a minimum of monthly.
the above password would take about three months to crack on a 3.0ghz computer running brute force all day.